|IP Filters for Linux and NetWare
a straight forward approach
by Joe Doupnik
It is now possible
to purchase from Mindworks Inc Ltd a CD-ROM containing
material which will help managers cope with a rather
awkwardly documented subject, ip filtering in Linux.
This is not a complete tutorial, nor a reference manual,
nor a guru's secret receipe book. It is, however, readable
and very useful for thinking clearly rather than blindly
copy someone else's attempts at writing strong filters.
The goal is designing strong filters which are compact
and hence easily understood, verified, and maintained,
and which survive system upgrades. Strength of filtering
and confidence of the manager are the primary concerns.
These flow from clear thinking with a sound plan, plus
careful use of available tools.
Also provided is an illustrated guide to IP filtering
on Novell's NetWare servers.
The IP filters CD contains an original tutorial and guide
on Linux firewall construction, specifically for use on
servers and clients, including providing NAT and client
The topic of IP filters can be a minefield to the uninitiated.
The information publically available needs to be distilled
to see how it can be applied.
Firewall design and Linux IPTables syntax are explained in a readily understood fashion. Example filters are created as part of the exposition.
Ready to use IP filters are supplied along with example files for SuSE and RedHat Linux which include the rules and the system start/stop script.
Relevant to all current editions of Linux and NetWare and includes a section on what the Kernel needs to provide for those using older or modified versions.
Learn how to think clearly rather than blindly copying someone else's attempts at writing strong filters.
To maintain your system security you need the information
detailed in this presentation. Buy
your copy now.
The cost of the CD-ROM is £70 plus VAT in the UK and
$125US in other parts of the world. Delivery is included.